Propionibacterium acnes

EqStim® is a preparation consisting of 0.4 mg/mL nonviable P. acnes suspension in 12.5% ethanol in saline.


A USDA-approved immunostimulant for adjunctive treatment of equine respiratory disease complex (ERDC).

Why use EqStim?

EqStim has been demonstrated to be effective in increasing the rate of recovery when used in conjunction with antibiotic or hyperimmune therapy in the treatment of primary and secondary bacterial and viral infections associated with equine respiratory disease complex.

  • Proven to provide rapid recovery from bacterial and viral respiratory infections.
  • Employs no adjuvants — safe for adult horses, ponies, and foals.
  • Evaluated in mares diagnosed with persistent endometritis. Results of this randomized, double-blinded clinical trial were published in the July 1, 2007 issue of JAVMA.1
  • Made in the U.S.A.

Directions for use

EqStim is administered via a series of intravenous (IV) injections, and dosing may vary based on weight of the animal. Please consult your veterinarian for proper dosage and administration.

Order Details

Item No.DescriptionCase Ct.
08890 EqStim 5 mL Vial 6
08891 EqStim 50 mL Vial 48

Reference Materials

Safety Data Sheets (SDS) and/or Labels

EqStim®, Safety Data Sheet [08890] [08891]

1 Contact Neogen for a complimentary reprint of this article: Rohrbach, Barton W., VMD, MPH, DACVPM; Peter C. Sheerin, DVM, DACT; Charles K. Cantrell, DVM; Phillip M. Matthews, DVM; John V. Steiner, DVM, DACT; Lewis E. Dodds, DVM. "Effect of adjunctive treatment with intravenously administered Propionibacterium acnes on reproductive performance in mares with persistent endometritis." JAVMA July 1, 2007; 231(1): 107-113.

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